Drive for cream-separators



W. E. RATHBUN.

DRIVE FOR CREAM SEPARATORS.

APPLICATION FILED MAY1y1920.

Patented July 5, 1921.

3 SHEETSSHEET l- INVENTOR W.E. RATHBUN.

DRIVE FOR CREAM SEPARATORS. APPLICATION FILED MAY7,1920.

1,38 3,854. 1mm July 5, 1921,.

a SHEETS-SHEET INVENTOR Z. Eat um W. E. RATHBUN. DRIVE FOR CREAM SEPARATORS.

APPLlCATlON FILED MAY 7. 1920.

Patented July 5, 192.1.

3 SHEETS-SHEET 3 INVENTOR .wuml M w NITED; STATS PATENT OFFICE.

WALTER E. RA'II-IBUN, 0F MIL-AN, ILLINOIS.

, DRIVE ron CREAM-SEPARATORS.

Specification of Letters Patent.

Application filed May 7, 1920. Serial No. 379,553.

T 0 all whom it may concern:

Be it known that I, WALTER E. RATHBUN, a citizen of the United States, .residing at Milan,

and useful Improvements in Drives for Cream-Separators; of which the following is a specification.

The present invention has to do with certain improvements in driving mechanism particularly for use in driving centrifugal cream separators. The features of the present invention are very well adapted for use inconnection with cream separator drives of the type disclosed in Letters Patent of the United States No. 1,281,418, issued't'o me under date of October-"15, 1918. Inorder that the featuresof the present invention may. be moreeasily understoodfand their mode ofoperation more readily explained,-

I have? illustrated said features as applied to a construction veryv similar in form' to the present inventionto the particular con-,

v and the pinion shaft;

' 6'6 of Fig. 4, looking in the direction of that illustrated in the aforesaid Letters Pat ent of the United, States. Nevertheless, I wish it clearly understood that I do not limit the use and application of the features of struction illustrated and disclosed in the said earlier Letters Patentexcept as I maydo so in the claims.

Bearing the foregoing in mind, Figure 1 shows in perspective a view of a simple form of cream separator having applied thereto a power drive embodying the features ofthe present invention; F ig.2 shows a back face view of the power driving arm and associated parts;-

Fig. 3 shows across section partly in'elevation of -.the construction'shown in Fig. "2; Fig. lshows an enlarged detailsection of the driving connection betweenthe pulley Fig. 5 shows'a cross section taken on the l1I1el5-.5 of Fig. 4, looking in the direction of the arrows; r

Fig. 6 shows a section taken on the line the arrows;

Fig. 7 shows a section taken on the line 77 of Fig. 6, looking in the direction of the arrows; and

I F 'g.- 8 shows a modifiedtype-of drive wheels inwhich the use of grooved pulleys has been substituted. forftheuse of toothed gears.

Referring first to Fig. 1, the separator in the county of Rock Island and' State of Illinois, have invented certain new therein indicated is designated in its entirety by the numeral 10. It includes a mainshaft 11 wh ich communicates with the rotating bowls through a train of Patented July 5,519.21.

gearing-con tamed within the stand 12'. .Inasmuch as I am not particularly concerned with the con-' struction of the separator or this train'of" on whichthe power is to Sufiice it to state that the shaft 1 1 of the use is shown in detail in F igsf2 to 7 inclusive.-

The crank is' provided on its inner end with a hub 1.5 mounted ona sleeve 16, which sleeve in turn may be set onto the end ofthe shaft 11" and drivingly secured thereto. A? set screw 17-'may..be provided for securin the sleeve tothe shaft 11 in'a driving fas ion When the cream separator is .to be d-r-i ven by hand, this may be done throughthe :me-

dium' of the handle1.14.. In those-cases, however, in which it is desired to use a power drive, the instrumentalities which I: will now describe may be brought-into operation. 4

For this purpose a gear18 is-zdrivingly mounted upon the sleeve 16 asby means of a key or thealike. 5 In somecases a sleeve'or collar-l9 may be set :onto the-.end'of the.

sleeve 16 so as to. overlie .the'hub portion" of the gear 18, the setscrew 17 passing through the collar .19 and serving tolhold said collar in position as well a'stoefiect-therdriying connection ontoithe shaft 11.' 1 A :pinion shaft 20 isjournaled in the bandle 13 and carries a pinion 21 which in turn meshes with the gear '18; In; the -modified constructionshown in Fig. 18, the .use' of toothed elements is dispensed with,'afriction1 drive including-the friction pulle 22,;and the friction pinion 23--lbeing SllbStltHtBCl; for

the "toothed gear 18 and toothed-{pinion 21.

It will be evident that by drivingmthe pinion shaft 20 as by. means of a pulley; 24 While holding -;the' handle 13 substantially stationa the cream.--separator will [be driven. n'Fig. l, I have illustrated a belt 25 driving-the pulley 24:, and-@the handle: 13

connection26,;including a spring 27 It will be evident that in order to make is held more or less -stat1onary by a link by hand, so that the shaft 11 of the cream separator would not be driven.

. I have, therefore, provided means for effecting a driving connection between the pulley 24 and the shaft 20 when it is desired to drive the separator by power and for properly locking the shaft 20 against rotation with respect to the handle 13 when it is desired to drive by hand. scribe these menas more in detail, and for this purpose reference may be had particularly to Figs. 4, 5, 6, and 7.

A collar 28 is secured to the shaft 20 as by means of a pin 29, the pulley 24 being rotatably mounted on the end portion of the shaft 20, and said end portion may be provided with an enlarged head 30 for retaining the pulley 24 in position thereon. The shaft 20 extends clean'through the handle 13 within which it is journaled and through the pinion 21, and a nut 31 on its inner end serves to retain all of the elements in position on the shaft 20.

An arcuate slot 32 is provided on the outer face of the collar 28, and a pin 33 is slidably mounted within a recess or pocket in the hub of the pulley 24 and is normally spring-pressed outwardly by a spring 34 insaid pocket. One end of the slot 32 is slanted or beveled, so that the shaft 20 may, in some cases, run ahead of the ulley 24, but upon driving the pulley 24 in t e normal driving direction, the pin 33 will engage the other end of the slot and drive the collar 28.

Another pin 35 is slidably mounted in a pocket in the hub portion of the handle 13, and this pin is normally spring-pressed outwardly by means of a spring 36. An arcuate slot 37 is provided in the back face of the collar 28, into which slot the pin 35is normally projectedby means of the spring 36. One end of the slot 37 is beveled or slanted in such fashion that the shaft 20 and collar 28 may run ahead of the handle 13 when the machine is being power driven, but the arrangement is such that when driving by hand the pin 35 will engage the other end of the slot 37 so as to effect a driving connection and prevent the shaft 20 from rotating in the journal or bearing in the handle 13.

It will be evident that in the normal power drive by the use of the pulley 24, the collar 28 will continue to run ahead of the pin 35, so that each time the pulley 24 completed a rotation the pin 35 would naturally snap back into the slot 37 with a clicking noise. In order to prevent this objectionable have provided, in

I will now de-- operation, I have provided means whereby the in 3 may be temporarily disengaged from the collar 28 and locked into such disengaged position. This means comprises a slot 38 through which extends a finger piece 39 from the pin 35, and the inner end ofsaid slot 38 is hooked as at 40 to accommodate the handle 39 when the pin 35 has been retracted. By the construction described I effect, a ratchet mechanism which serves adequately to fulfil all the requirements of this invention.

In certain constructions now in common use the hand crank 13 is attached to one end of the drive shaft While the gear 18 and pinion 21 are located at its opposite end, but my invention is equally adaptable to such a construction without substantial modification. .While I have herein shown and described only certain embodiments of the features of my present invention, still it will be understood that I do not limit myself to the said features except as I may do so in the claims.

I claim:

1. The combination with the operating mechanism of a cream separator including an operating shaft, of a main gear drivingly connected to said shaft, a crank arm pivotally mounted with respect to the shaft, a pinion shaft journaled in the crank arm, a pinion on the pinion shaft drivingly engaging the main gear, a collar drivingly'secured to the pinion shaft, a pulley journaled on the pinion shaft adjacent to one face of the collar, a ratchet and pin connection between the pulley and collar permitting the pinion shaft and collar to run ahead of the pulley but insuring a driving connection from the pulley to the pinion shaft when the pulley tends to run ahead of the pinion shaft, and a pin and ratchet connection between the other face of the collar and the crank arm permitting the collar and pinion shaft to run ahead of the crank arm, but preventing a retrogressive movement between" these parts, substantially as described. 2. The combination with the operating mechanism of a cream separator including a driving shaft, of a crank arm pivotally mounted concentrically with respect to the driving shaft, a pinion shaft journaled in the crank arm, a gear and pinion connection between the pinion shaft and the driving shaft, a collar secured to the pinion shaft, a pulley journaled on the pinion shaft adjacent to one face of said collar," means in conjunction with the collar and pulley permitting the pinion shaft and collar to run ahead of the pulley, but insuring a driving connection from the pulley to the collar and pinion shaft in the same direction, and means in conjunction with the collar and crank arm permitting the pinion shaft" and collar to run ahead of the crank arm, but preventing a retrogressive movement between these parts, substantially as described.

3. The combination with the operating mechanism of a cream separator including a driving shaft, of a crank arm pivotally mounted with respect to the driving shaft, a pinion shaft journaled in the crank arm, a pinion and gear connection between the pinion shaft and the driving shaft, a pulley journaled on the pinion shaft, means in conjunction with the pulley and pinion shaft permitting the pinion shaft to run ahead of the pulley but insuring a driving connection from the pulley to the pinion shaft in the same direction, and means in conjunction with the pinion shaft and crank arm permitting the pinion shaft to run ahead of the crank arm, but preventing retrogressive movement between these parts, substantially as described.

4:. The combination with the operating mechanism of a cream separator including a driving shaft and a pinion shaft, of a crank arm pivotally mounted with respect to the driving shaft, a pinion and gear connection between the pinion shaft and the driving shaft, a pulley on the pinion shaft, and means in conjunction with the pinion shaft and pulley permitting the pinion shaft to .run ahead of the pulley but insuring a driving connection from the pulley to the pinion shaft, substantially as described.

5. The combination with the operating mechanism of a cream separator, including a driving shaft and a pinion shaft, of a crank arm operatively mounted with respect to the driving shaft, a driving connection between the pinion shaft and the driving shaft, a pulley on the pinion shaft, and means associated with the pinion shaft and pulley permitting the former to run ahead of the latter but insuring the driving connection from the latter to the former, substantially as described.

' WALTER E. RATHBUN. 

